案例51-crm练习新增客户使用数据字典和ajax

1 案例效果

2 使用ajax加载数据字典下拉选-后台部分

1 domain部分-BaseDict

package www.test.domain;

public class BaseDict {
/*
 * CREATE TABLE `base_dict` (
  `dict_id` varchar(32) NOT NULL COMMENT '数据字典id(主键)',
  `dict_type_code` varchar(10) NOT NULL COMMENT '数据字典类别代码',
  `dict_type_name` varchar(64) NOT NULL COMMENT '数据字典类别名称',
  `dict_item_name` varchar(64) NOT NULL COMMENT '数据字典项目名称',
  `dict_item_code` varchar(10) DEFAULT NULL COMMENT '数据字典项目(可为空)',
  `dict_sort` int(10) DEFAULT NULL COMMENT '排序字段',
  `dict_enable` char(1) NOT NULL COMMENT '1:使用 0:停用',
  `dict_memo` varchar(64) DEFAULT NULL COMMENT '备注',
  PRIMARY KEY (`dict_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 */
    private String dict_id;
    private String dict_type_code;
    private String dict_type_name;
    private String dict_item_name;
    private String dict_item_code;
    private String dict_memo;
    private Integer dict_sort;
    private Character dict_enable;

    public String getDict_id() {
        return dict_id;
    }
    public void setDict_id(String dict_id) {
        this.dict_id = dict_id;
    }
    public String getDict_type_code() {
        return dict_type_code;
    }
    public void setDict_type_code(String dict_type_code) {
        this.dict_type_code = dict_type_code;
    }
    public String getDict_type_name() {
        return dict_type_name;
    }
    public void setDict_type_name(String dict_type_name) {
        this.dict_type_name = dict_type_name;
    }
    public String getDict_item_name() {
        return dict_item_name;
    }
    public void setDict_item_name(String dict_item_name) {
        this.dict_item_name = dict_item_name;
    }
    public String getDict_item_code() {
        return dict_item_code;
    }
    public void setDict_item_code(String dict_item_code) {
        this.dict_item_code = dict_item_code;
    }
    public String getDict_memo() {
        return dict_memo;
    }
    public void setDict_memo(String dict_memo) {
        this.dict_memo = dict_memo;
    }
    public Integer getDict_sort() {
        return dict_sort;
    }
    public void setDict_sort(Integer dict_sort) {
        this.dict_sort = dict_sort;
    }
    public Character getDict_enable() {
        return dict_enable;
    }
    public void setDict_enable(Character dict_enable) {
        this.dict_enable = dict_enable;
    }
    @Override
    public String toString() {
        return dict_item_name;
    }

}

2 domain部分-BaseDict.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="www.test.domain" >
    <class name="BaseDict" table="base_dict" >
        <id name="dict_id"  >
            <generator class="assigned"></generator>
        </id>
        <property name="dict_type_code" ></property>
        <property name="dict_type_name" ></property>
        <property name="dict_item_name" ></property>
        <property name="dict_item_code" ></property>
        <property name="dict_memo" ></property>
        <property name="dict_sort" ></property>
        <property name="dict_enable" ></property>
    </class>
</hibernate-mapping>

3 domain部分-Customer

package www.test.domain;

public class Customer {

    /*
     * CREATE TABLE `cst_customer` (
      `cust_id` BIGINT(32) NOT NULL AUTO_INCREMENT COMMENT '客户编号(主键)',
      `cust_name` VARCHAR(32) NOT NULL COMMENT '客户名称(公司名称)',
      `cust_source` VARCHAR(32) DEFAULT NULL COMMENT '客户信息来源',
      `cust_industry` VARCHAR(32) DEFAULT NULL COMMENT '客户所属行业',
      `cust_level` VARCHAR(32) DEFAULT NULL COMMENT '客户级别',
      `cust_linkman` VARCHAR(64) DEFAULT NULL COMMENT '联系人',
      `cust_phone` VARCHAR(64) DEFAULT NULL COMMENT '固定电话',
      `cust_mobile` VARCHAR(16) DEFAULT NULL COMMENT '移动电话',
      PRIMARY KEY (`cust_id`)
    ) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
     */
    private Long cust_id;

    private String cust_name;
    //private String cust_source;
    //private String cust_industry;
    //private String cust_level;
    private String cust_linkman;
    private String cust_phone;
    private String cust_mobile;

    //引用关联的数据字典对象
    private BaseDict cust_source; //客户来源 cust_source.dict_id
    private BaseDict cust_industry; //客户行业
    private BaseDict cust_level; //客户级别

    public BaseDict getCust_source() {
        return cust_source;
    }
    public void setCust_source(BaseDict cust_source) {
        this.cust_source = cust_source;
    }
    public BaseDict getCust_industry() {
        return cust_industry;
    }
    public void setCust_industry(BaseDict cust_industry) {
        this.cust_industry = cust_industry;
    }
    public BaseDict getCust_level() {
        return cust_level;
    }
    public void setCust_level(BaseDict cust_level) {
        this.cust_level = cust_level;
    }
    public Long getCust_id() {
        return cust_id;
    }
    public void setCust_id(Long cust_id) {
        this.cust_id = cust_id;
    }
    public String getCust_name() {
        return cust_name;
    }
    public void setCust_name(String cust_name) {
        this.cust_name = cust_name;
    }
    public String getCust_linkman() {
        return cust_linkman;
    }
    public void setCust_linkman(String cust_linkman) {
        this.cust_linkman = cust_linkman;
    }
    public String getCust_phone() {
        return cust_phone;
    }
    public void setCust_phone(String cust_phone) {
        this.cust_phone = cust_phone;
    }
    public String getCust_mobile() {
        return cust_mobile;
    }
    public void setCust_mobile(String cust_mobile) {
        this.cust_mobile = cust_mobile;
    }
    @Override
    public String toString() {
        return "Customer [cust_id=" + cust_id + ", cust_name=" + cust_name + "]";
    }
}

4 domain部分-Customer.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="www.test.domain" >
    <class name="Customer" table="cst_customer" >
        <id name="cust_id"  >
            <generator class="native"></generator>
        </id>
        <property name="cust_name" column="cust_name" >
        </property>
        <!-- <property name="cust_source" column="cust_source" ></property>
        <property name="cust_industry" column="cust_industry" ></property>
        <property name="cust_level" column="cust_level" ></property> -->
        <property name="cust_linkman" column="cust_linkman" ></property>
        <property name="cust_phone" column="cust_phone" ></property>
        <property name="cust_mobile" column="cust_mobile" ></property>

        <!-- 多对一 -->
        <many-to-one name="cust_source" column="cust_source" class="BaseDict" ></many-to-one>
        <many-to-one name="cust_industry" column="cust_industry" class="BaseDict" ></many-to-one>
        <many-to-one name="cust_level" column="cust_level" class="BaseDict" ></many-to-one>
    </class>
</hibernate-mapping>

5 BaseDictAction

package www.test.web.action;

import java.util.List;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

import net.sf.json.JSONArray;
import www.test.domain.BaseDict;
import www.test.service.BaseDictService;

public class BaseDictAction extends ActionSupport {
    private String dict_type_code;
    private BaseDictService baseDictService;

    public String list() throws Exception {
        //1 调用Service根据typecode获得数据字典对象list
        List<BaseDict> list = baseDictService.getListByTypeCode(dict_type_code);
        //2 将list转换为 json格式
        String json = JSONArray.fromObject(list).toString();
        //3 将json发送给浏览器
        ServletActionContext.getResponse().setContentType("application/json;charset=utf-8");
        ServletActionContext.getResponse().getWriter().write(json);
        return null;//告诉struts2不需要进行结果处理
    }
    public String getDict_type_code() {
        return dict_type_code;
    }
    public void setDict_type_code(String dict_type_code) {
        this.dict_type_code = dict_type_code;
    }
    public void setBaseDictService(BaseDictService baseDictService) {
        this.baseDictService = baseDictService;
    }
}

6 BaseDictService

package www.test.service;

import java.util.List;

import www.test.domain.BaseDict;

public interface BaseDictService {

    //根据数据字典类型字段dict_type_code获取数据字典对象list
    List<BaseDict> getListByTypeCode(String dict_type_code);

}

7 BaseDictServiceImpl

package www.test.service.impl;

import java.util.List;

import www.test.dao.BaseDictDao;
import www.test.domain.BaseDict;
import www.test.service.BaseDictService;

public class BaseDictServiceImpl implements BaseDictService {

    private BaseDictDao baseDictDao ;
    @Override
    public List<BaseDict> getListByTypeCode(String dict_type_code) {

        List<BaseDict> list = baseDictDao.getListByTypeCode(dict_type_code);

        return list;
    }
    public void setBaseDictDao(BaseDictDao baseDictDao) {
        this.baseDictDao = baseDictDao;
    }
}

8 BaseDictDao

package www.test.dao;

import java.util.List;

import www.test.domain.BaseDict;

public interface BaseDictDao extends BaseDao<BaseDict> {

    //根据数据字典类型字段dict_type_code获取数据字典对象list
    List<BaseDict> getListByTypeCode(String dict_type_code);

}

9 BaseDictDaoImpl

package www.test.dao.impl;

import java.util.List;

import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;

import www.test.dao.BaseDictDao;
import www.test.domain.BaseDict;

public class BaseDictDaoImpl extends BaseDaoImpl<BaseDict> implements BaseDictDao {

    @Override
    public List<BaseDict> getListByTypeCode(String dict_type_code) {

        //创建离线查询对象
        DetachedCriteria dc = DetachedCriteria.forClass(BaseDict.class);
        //添加查询条件
        dc.add(Restrictions.eq("dict_type_code", dict_type_code));

        //执行查询
        List<BaseDict> list = (List<BaseDict>) super.getHibernateTemplate().findByCriteria(dc);

        return list;
    }

}

3 使用ajax加载数据字典下拉选-前台部分

1 jsp/customer/add.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<TITLE>添加客户</TITLE>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<LINK href="${pageContext.request.contextPath }/css/Style.css" type=text/css rel=stylesheet>
<LINK href="${pageContext.request.contextPath }/css/Manage.css" type=text/css
    rel=stylesheet>
<script type="text/javascript" src="${pageContext.request.contextPath }/js/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath }/js/my.js"></script>
<script type="text/javascript">
    $(function(){
        loadSelect("006","level","cust_level.dict_id");
        loadSelect("002","source","cust_source.dict_id");
        loadSelect("001","industry","cust_industry.dict_id");
    });
</script>

<META content="MSHTML 6.00.2900.3492" name=GENERATOR>
</HEAD>
<BODY>
    <FORM id=form1 name=form1
        action="${pageContext.request.contextPath }/CustomerAction_add"
        method=post>

        <TABLE cellSpacing=0 cellPadding=0 width="98%" border=0>
            <TBODY>
                <TR>
                    <TD width=15><IMG src="${pageContext.request.contextPath }/images/new_019.jpg"
                        border=0></TD>
                    <TD width="100%" background="${pageContext.request.contextPath }/images/new_020.jpg"
                        height=20></TD>
                    <TD width=15><IMG src="${pageContext.request.contextPath }/images/new_021.jpg"
                        border=0></TD>
                </TR>
            </TBODY>
        </TABLE>
        <TABLE cellSpacing=0 cellPadding=0 width="98%" border=0>
            <TBODY>
                <TR>
                    <TD width=15 background=${pageContext.request.contextPath }/images/new_022.jpg><IMG
                        src="${pageContext.request.contextPath }/images/new_022.jpg" border=0></TD>
                    <TD vAlign=top width="100%" bgColor=#ffffff>
                        <TABLE cellSpacing=0 cellPadding=5 width="100%" border=0>
                            <TR>
                                <TD class=manageHead>当前位置：客户管理 &gt; 添加客户</TD>
                            </TR>
                            <TR>
                                <TD height=2></TD>
                            </TR>
                        </TABLE>

                        <TABLE cellSpacing=0 cellPadding=5  border=0>

                            <TR>
                                <td>客户名称：</td>
                                <td>
                                <INPUT class=textbox id=sChannel2
                                                        style="WIDTH: 180px" maxLength=50 name="cust_name">
                                </td>
                                <td>客户级别 ：</td>
                                <td id="level">

                                </td>
                            </TR>

                            <TR>

                                <td>信息来源 ：</td>
                                <td id="source">

                                </td>
                                <td>客户行业：</td>
                                <td id="industry">

                                </td>
                            </TR>

                            <TR>

                                <td>固定电话 ：</td>
                                <td>
                                <INPUT class=textbox id=sChannel2
                                                        style="WIDTH: 180px" maxLength=50 name="cust_phone">
                                </td>
                                <td>移动电话 ：</td>
                                <td>
                                <INPUT class=textbox id=sChannel2
                                                        style="WIDTH: 180px" maxLength=50 name="cust_mobile">
                                </td>
                            </TR>

                            <tr>
                                <td rowspan=2>
                                <INPUT class=button id=sButton2 type=submit
                                                        value=" 保存 " name=sButton2>
                                </td>
                            </tr>
                        </TABLE>

                    </TD>
                    <TD width=15 background="${pageContext.request.contextPath }/images/new_023.jpg">
                    <IMG src="${pageContext.request.contextPath }/images/new_023.jpg" border=0></TD>
                </TR>
            </TBODY>
        </TABLE>
        <TABLE cellSpacing=0 cellPadding=0 width="98%" border=0>
            <TBODY>
                <TR>
                    <TD width=15><IMG src="${pageContext.request.contextPath }/images/new_024.jpg"
                        border=0></TD>
                    <TD align=middle width="100%"
                        background="${pageContext.request.contextPath }/images/new_025.jpg" height=15></TD>
                    <TD width=15><IMG src="${pageContext.request.contextPath }/images/new_026.jpg"
                        border=0></TD>
                </TR>
            </TBODY>
        </TABLE>
    </FORM>
</BODY>
</HTML>

2 my.js

//使用ajax加载数据字典，生成select
//参数1：typecode     数据字典的类型(dict_type_code)
//参数2：positionId   将下拉选放入的位置的标签id
//参数3：selectname   生成下拉选时，select标签的name属性
//参数4：selectedId   需要回显时，选中哪个option
function loadSelect(typecode, postionId, selectname, selectedId) {
    // 1 创建select对象，将name属性指定。
    var $select = $("<select name='" + selectname + "'></select>");

    // 2 添加提示选项
    var $option = $("<option value=''>--请选择--</option>");
    // $select.html($option);
    // $option.appendTo($select);
    $select.append($option);

    // 3 使用jQuery的ajax方法，访问后台Action
    $.post(
        "${pageContext.request.contextPath}/BaseDictAction_list",
        {"dict_type_code" : typecode},
        function(data) {
        // alert(data);
        // 4 返回json数组对象，对其进行遍历
        $.each(data, function(i, json) {
            // alert(i+":"+n);
            // 遍历创建一个option对象，判断是否需要回显，并添加到select对象。
            var $optionItem = $("<option value='" + json['dict_id'] + "'>"
                    + json['dict_item_name'] + "</option>");

            // 判断是否需要回显,如果需要使其被选中
            if (json['dict_id'] == selectedId) {
                // $optionItem.attr("selected","selected");
                $optionItem.attr("selected", true);
            }
            $select.append($optionItem);

        });
    },
    "json"
    );
    // 5 将数组装好的select对象放入页面指定位置。
    $("#" + postionId).append($select);
};

4 保存客户后台逻辑

5 问题解决

方法一： 在list的遍历代码中加入dict_item_name

方法二：在BaseDict中重写toString方法.

@Override
public String toString() {
    return dict_item_name;
}